how to go through an array in vue code example

Example 1: vue list render in

<ul id="example-1">
  <li v-for="item in items" :key="item.message">
    {{ item.message }}
  </li>
</ul>

Example 2: v-for

<li v-for="item in items" :key="item.message">
    {{ item.message }}
  </li>